Gripper for printing-presses.



No. 776,792. PATENTED DEC. 6, 1904. B. MQGINTY.

GRIPPEE FOR PRINTING PRESSES.

APPLICATION FILED APR.11. 1904.

.110 MODEL.

- the gripper.

UNiTED STATES Patented December 6, 1904.

PATENT OFFICE.

GRIPPER FOR- PRlNTlNG-PRESSES.

SPECIFICATION forming part of Letters Patent No. 776,792, dated December6, 1904.

Application filed April 11, 1904. Serial No. 202,544- (No model.)

To aZZ whom. it may concern.-

Be it known that I, BERNARD MoGin'rr, a citizen of the UnitedStates,residing at Doylestown, in the county of Bucks and State ofPennsylvania, have invented new and useful Improvements in Grippers forPrinting-Presses, of which the following is a specification.

My invention pertains to that type of grippers for printing-presseswhich comprise a gripper-body and an arm adjustably held to andextending laterally inward from the body; and it consists in thepeculiar and advantageous construction of gripper hereinafter described, and particularly pointed out in the claims appended.

In the accompanying drawings,forming part of this specification, Figure1 is a view illustrating one embodiment of my invention in its properoperative position relative to the platen of a printing-press. Fig. 2 isa transverse section of the gripper, taken in the plane indicated by theline 2 2 of Fig. 1. Fig. 3 is an enlarged detail front elevation of thebody of Fig. 4 is a detail elevation illustrating a modificationhereinafter referred to, and Fig. 5 is a section taken in the planeindicated by the line 5 5 of Fig. 4:.

Referring by letter to the said drawings, and more particularly to Figs.l-to 3 thereof, A is a platen of a printing-press, which is providedwith the usual clamps a. B is the body of my novel gripper. C is the armwhich extends laterally inward from the said body, and D is the ordinarywell-known connection between the gripper-body and the press. Thegripper-body B is peculiar in that it is provided in one edge,preferably its inner edge, at intervals of its length with notches a, asbest shown in Fig. 3, while the arm C is peculiar in that it is providedat one end with a loop 7), which receives the body B after the mannerbest shown in Fig. 2. The forward wall of the said loop I) extendsinwardly beyond the inner edge of the body B, so as to form afinger-piece 0, and is provided with one or more (preferably two)projections (Z, which are disposed at right angles to it and aredesigned to be sprung into and out of engagement with notches a in thebody B. The arm 0 (shown in Figs. 1 and 2) is preferably of thin sheetmetal and is designed to rest between horizontal lines on a form, and inthis connection I desire to state that three or more arms C arepreferablyprovided in connection with each gripper-body B, as indicatedby dotted lines in Fig. 1, on one the arm being in the middle, onanother three type-points above the middle, and on the third threetypepoints below the middle, for this reason: Should the middle armhappen to come on a line in a job and not between two lines, then eitherof the others would fit in, as the case might be, by reason of the armbeing a little farther up or a little farther down, although the samenotches in the gripper-arm would be used.

In the practical use of my novel gripper the forward wall of the loop 7)on arm C is held away from the inner portion of the forward side of thebody B and the arm is adjusted to the point desired on the body, whenthe said forward wall of the loop I) is released. On the release of thesaid wall of the loop I) the projections a thereon will spring intonotches a in the body B, and thereby positively fix the arm on the body.While the projections of on the armGmay be depended on to hold the saidarm against casual movement on the body, yet it will be observed thatwhen it is desired to adjust the arm on the body or remove it therefromthe same may be effected subsequent to moving the linger-piece 0forwardly to withdraw the projections (Z from the notches a in the body.

It will be appreciated from the foregoing that by virtue of theconstruction of my novel gripper the arm C may be readily adjusted andad justably and positively fixed on the body B, and this without theemployment of tools. It will also be appreciated that my novel gripperdoes not embody springs or other weak parts, such as are liable to giveway after a short period of use, and also does not embody screws orother parts likely to fall and be lost in use.

The modified construction (shown in Figs. l and 5) is designed for usewhen the lines of the form extend up and down instead of horizontally.The said modified construction comprises a notched body B, an arm C, ex-

tending laterally inward from the body and having a loop 6 receiving thesame, and a finger D, disposed at right angles to the arm C and having aloop 6 receiving said arm. The arm C differs from the arm C in that itis heavier and has a longitudinal rib 0. This rib rests in acomplementary concavity e in the loop 7/ of the finger D and has for itspurpose to hold the said finger at right angles to the arm C and yetpermit of the finger being adjusted on the arm in the direction of thelength of thelatter.

It will be gathered from the foregoing that my improvements are designedto take the place of rubber bands or strings extending across the platenfrom one gripper-body to another.

I have entered into a detailed description of the construction andrelative arrangement of the parts embraced in the present and preferredembodiments of my invention in order to impart a full, clear, and exactunderstanding of the same. I do not desire, however, to be understood asconfining myself to such specific construction and relative arrangementof parts, as such changes or modifications may be made in practice asfairly fall within the scope of my invention as claimed.

Having described my invention, what I claim, and desire to secure byLetters Patent,

1. In a gripper i'or printing-presses, the combination of a body havingnotches in its inner edge at intervals of its length, and an arm formedof one piece disposed laterally to the body and having a loop receivingthe said body; the said loop being open at its inner end and beingprovided with a free, resilient forward wall having one or moreprojections v inner edge at intervals of its length, and an arm disposedlaterally to the body and having a loop receiving the said body; thesaid loop being o pen at its inner end anddfirfigprovided with a free,resilient forward wall which extends inwardly beyond the inner edge ofthe body to form a finger-piece and has one or more projections disposedat right angles to it and arranged to be sprung into and out ofengagement with notches in the body.

3. In a gripper for printing-presses, the combination of a body havingnotches, an arm disposed laterally to the body and having a loopreceiving the body, and also having a projection on one wall of saidloop arranged to be sprung into and out of notches of the body, a fingeradjustable on the said arm, and coacting means on the arm and finger forholding the latter against swinging.

in testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

BERNARD MOGINTY. lVitnesses:

J. J OHNSON BEANS, ASHER K. ANDERS.

